Motor rotor, motor and installation method of motor rotor

Abstract

The invention discloses a motor rotor, a motor and a mounting method of the motor rotor. The motor rotor comprises a rotor room, and a cylindrical cavity extending in the axial direction of the rotorroom is arranged in the rotor room; the motor rotor is characterized by further comprising a plurality of rotor cores and a plurality of bridging rib plates, the rotor cores and the bridging rib plates are annular structures; the outer peripheral surface of the rotor core and the outer peripheral surfaces of the bridging rib plates are attached to the inner peripheral surface of the cylindrical cavity; the multiple rotor cores and the multiple bridging rib plates are arranged at intervals in the axial direction of the cylindrical cavity, the side faces of the bridging rib plates abut against the rotor cores on the same side, and the bridging rib plates are fixed in the cylindrical cavity through welding. According to the motor rotor, the risk caused by bolt loosening is avoided, and the reliability of the rotor core is enhanced. The outer peripheral surface of the rotor core can be completely attached to the inner peripheral surface of the rotor house, the structural integrity is verygood, and the risk of local tiny vibration is reduced.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor rotor, a motor and a method for installing the motor rotor. Background technique [0002] The permanent magnet motor provides a magnetic field by installing multiple sets of permanent magnet modules on the inner wall of the outer rotor as its magnetic poles. In order to reduce the various corrosions of the permanent magnets and improve the efficiency and life of the permanent magnets, the permanent magnets are usually packaged and made into magnetic pole modules. In existing permanent magnet motors, in order to reduce power loss, a rotor core is usually provided between the inner wall of the outer rotor and the magnetic pole module. The rotor core is generally a laminated silicon steel sheet. Due to the large size of the outer rotor of a large motor, the required rotor core is relatively large in size and heavy in weight. Generally, it is fixed by opening dovetail grooves on the in...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a motor rotor, a motor and a method for installing the motor rotor in order to overcome the high cost of installing the rotor core in the motor rotor and the defects that the bolts are easy to fall off in the prior art

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